1. **State the problem:** Amari bought 12 mini muffins for 5.40. We need to find the price of 4 mini muffins at the same rate. 2. **Formula used:** To find the price for a different quantity at the same rate, use the unit rate formula: $$\text{Price per muffin} = \frac{\text{Total price}}{\text{Number of muffins}}$$ 3. **Calculate the unit price:** $$\text{Price per muffin} = \frac{5.40}{12}$$ 4. **Simplify the fraction:** $$\frac{\cancel{5.40}}{\cancel{12}} = 0.45$$ So, each mini muffin costs 0.45. 5. **Find the price for 4 muffins:** $$\text{Price for 4 muffins} = 4 \times 0.45 = 1.80$$ 6. **Answer:** The price of 4 mini muffins is 1.80.